Los 299
1927/33, Express mail stamp 1,25 l. on 60 c. perf. 11 with overprint in black, nice fresh colour and well perforated, unused with fresh original gum and small hinge mark. One of the rarest stamps of the Italian area, only one further example believed to exist, signed Alberto Diena with certificate (1958) (Sassone 11; € 210.000,-)
